package io;

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;

public class CopyDemo {
    public static void main(String[] args) throws IOException {

        FileInputStream fis =new FileInputStream("rita.jpg");
        FileOutputStream fos =new FileOutputStream("rita.rossweisse.jpg");

        long start =System.currentTimeMillis();//自1970.1.1到此时此刻的毫秒数
        int d;
        while((d=fis.read())!=-1){
            fos.write(d);
        }

        long end =System.currentTimeMillis();
        System.out.println("复制完成！耗时："+(end-start)+"ms");

        fis.close();
        fos.close();
    }
}
